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mysql_num_rows will give you a count of how many rows the query returned, not how many fields are in each row. Although I've never used mysql_list_fields, it should give you an array of the field names in the table, not in the result set, but it should be the same if your query is like 'SELECT * FROM tablename'. Check the manual to see if it's what you need. http://www.php.net/manual/en/function.mysql-list-fields.php